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Finding the Fourth Proportional to 438,052.40, 657,078.60 and 288,461.60

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Solution

The fourth proportional to 438,052.40, 657,078.60 and 288,461.60 is: 432,692.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,052.40 : 657,078.60 = 288,461.60 : x
  2. Step 2: Convert to fraction form
    438,052.40/657,078.60 = 288,461.60/x
  3. Step 3: Cross multiply
    438,052.40x = 657,078.60 × 288,461.60
  4. Step 4: Simplify right side
    438,052.40x = 189,541,944,281.76
  5. Step 5: Solve for x
    x = 189,541,944,281.76/438,052.40
  6. Step 6: Final answer
    x = 432,692.40

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